Improvement in processes for renovating printers  rolls



PATENT OFFICE,

BE J MINQIF ntes; o'F osToN, MASSACHUSETTS.

I|v|PR'ovEMENTJNQP Qclasses] Fat RENOVATING PRINTERS ROLLS.

Specification forming pairt of Letters Patent .No. 188,765, dated March27, 1877; application fi February a, 1877.

To all whom it may concern: i

Be it known that I, BENJAMIN F. ALLEN,

of the city of Boston, county'of Suffolk, and State of Massachusetts,have invented'a new and Improved Process'for Treating and BenovatingPrinters Rollers,tof which the following is such a full, clear,andexa'bt description as will enable others skilled in the art,- to applythe same. a

' It is well known that an inking-roller, after a longer or shorterperiod of use, according to the-care bestowed upon it, becomesdeteriorated, losing its suction) as it is technically called, or takingqualities, and becomes rough and uneven upon', its surface, and entirelyworthless.

Now, an old roller, after. it has become sea-- soned -or toughenedbyage, is, if it canv be made to work, superior'to a new one in manyrespects, as it willbear-harder usage, and

may be run more rapidly without danger of softening or melting. Such 'aroller, therefore," if its surface can be kept in a proper condition,'is much more valuable thana new one. And

the object of this invention is to return to the roller, when'itssurface becomes deteriorated by use, that portion of its substance lostwithout recasting the whole roller, as is now the common practice; andthe invention consists in the means and method employed for returnin gto the roller an equivalent of the substance lost therefrom, as willbehereinafter fully set dissolved sugar, or glucose, and allowing them toabsorb the same. If rendered necessary by the nature of the inks uponwhich the roller has been working, they may receive a wash of an acid oralkaline nature; or the substances which it is' desired to impregnatethe roller with may be diluted with water in which these agencies havebeen placed. If in a very bad condition the rolls may be rinsed in cleanwater, or water having a little molasses or other saccharine matterdissolved in it, as rinsing in such Water does not remove any furtherportion of the molasses from the roller.

The layer is then applied to the surface, and

this washing, or rinsing, and the application of the saccharine mattermay be repeated daily until the proper surface for work is obtained; andto retain the rollers always in a proper working condition, they shouldbe washed at night after the days work is finished, and then coveredwith a coat of molasses. In the morning before starting the presses therollers should be sponged off with clear water, when they willbe foundto be in. perfect working order, and to remain so as long as this methodof replacing the saccharine matter lost during each days work iscontinued Having thus described my invention, I claim as new, and desireto secure by Letters Patent of the United States of America, thefollowing:

The process of renovating printers rollers by replacing the saccharinematter lost through use, by applying to them an alkaline or acid wash,and a covering of molasses, glucose, or its equivalent, substantially ashereinbefore set forth.

In testimony that I claim the foregoing as I my invention, witness myhand this 31st day of January, A. D. 1877.

BENJAMIN F. ALLEN.

Witnesses:

J OHN G. J AGKSON, SoLoN BANOROFT.

